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You searched for: (collection:us_patents OR mediatype:us_patents) AND -mediatype:collection AND firstCreator:Z
[texts]US Patent 2601505: Subscription type television transmitter - Zenith Radio Corp

Downloads: 135
[texts]US Patent 2601516: Color television synchronizing system - Zenith Radio Corp

Downloads: 152
[texts]US Patent 2600369: Knitting machine - Zimic

Downloads: 170
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